Automatic thermostatic valve



(N0 Model.) 7

L. L. ROWE. AUTOMATIC THERMOSTATIC VALVE.

3 Sheets-Sheet; 1.

No. 580,585. Patented Apr. 13, 1897.

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5, I lflJspl-ma 3 Sheets-Sheet 2.

(No Model.) I L. L. ROWE.

AUTOMATIG THERMOSTATIG VALVE.

No. 580,585. PatentedApr. 13, 1897.

3 Sheets-Sheet 3,

L L. ROWE. AUTOMATIC THERMOSTATIG VALVE.

(No Model.)

Patented Apr, 13, 1897.

I y z 7 LEVI LEROT ROWE, OF BOSTON, MASSACHUSETTS.

AUTOMATIC TH ERMOSTATIC VALVE.

SPECIFICATION forming part of Letters Patent N0. 580,585, dated April13, 1897.

Application filed January 18, 1897. Serial No. 619,578. (No model.)

To all whom it may concern:

Be it known that I, LEVI LEROY ROWE, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented a new and useful Improvement in Automatic ThermostaticValves, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification, in explaining its nature.

The invention relates especially to an an tomatic valve for regulatingthe supply of gas operated and controlled by variations in temperatureof any medium, preferably, however, the medium adapted to be heated bythe burning of said gas.

In the drawings I have represented the invention as applied to aliquid-heater of my invention.

Figure 1 is a View in vertical section thereof. Fig. 2 is amuch-enlarged view of the valve in vertical section alone. Fig. 3 is adetail view in vertical section of a" portion of the valve, to whichreference is hereinafter made. Fig. 4 is a view in horizontal sectionupon the dotted line 4 4 of Fig. 3. Figs. 5 and 6 are detail views inhorizontal section, to which I reference will be hereinafter made.

A is the shell of the liquid-heater, forming a reservoir A for theliquid,which is admitted thereto through the passage in the feed orsupply pipe B,the said pipe extending through the horizontal hole a insaid casing A, and joining at its inner end a boss 0, extendinglaterally from a section 0 of the valve-casing. This boss 0 has apassage in continuation of the passage of the supply-pipe, which opensinto a vertical passage 0 in which is the upper end of the pipe or tube0 This tube extends downwardly into the reservoir A and is parallel withand close to the extensible pipe D, to which reference will hereinafterbe made.

The heated liquid is drawn from the reservoir through the outlet 6,controlled by a suitable cock E.

Beneath the casing A is the gas-burner F, which is supplied with gas bymeans of a passage in the gas-supply pipe f. This pipe is in twosections-ham ely, the section f,which extends from the valve-casing O tothe burner, and the section f which connects the main with the saidcasing. The casingA, the

burner, pipes, and valve are inclosed by a shell A (See Fig. 1.)

The valve-casing has two principal partsnamely, the section 0, alreadyreferred to, and the section a, the two comprising the valvecase 0. Thesection 0 is contained in the chamber ct, extending downward from thetop of the casing A, and the lateral'hole a connects with it. In thebottom of this chamher there is the threaded hole a into which thethreaded neck 0 of the section 0 of the valve-casing screws, until theflange 0 thereof rests upon the upper surface of the casing A about thechamber. The neck 0 has ahole c and an interior screw-thread c and theextensible pipe D is connected with the said neck at its upper end byits threaded section which engages the said threaded section 0 of theneck. The lower end of this tube is tightly closed bya cap 0", whichalso acts as a rest or support for the inextensible rod D, contained inthe cavity of the tube and extending be yond its upper end into andslightly above the hole 0 The liquid does not enter the cavity of thesaid tube D.

The extensible tube D and the inextensible rod D form means by which thevalve is operated, variations in the temperature of the liquid causingthe tube D to extend in relation to the neck a and this movement iscommunicated at thelower end of the tube to the inextensible rod D,which is thereby moved in one direction or the other, and communicatessaid movement to the lever G, pivoted at g to a piece or support 9,which is united to the valve-case section 0 by ahollowscrewboss whichscrews into the upper threaded section of the neck 0 This support notonly carries the lever G, but also a second lever G, with which the endof the first lever is engaged in a way to multiply its movement, and

the end of the second lever is connected directly with the valve, itsmovement of course being much greater than that of the movement of theinextensible rod.

H (see Fig. 2) is the valve. It is in the form of an inverted V in theunder side of the head It, formed upon or attached to the upper end of amovable sleeve or spindle h. This sleeve or spindle communicates themovement of the outer end of the lever G to the valve and causes theposition of the valve to be automatically varied in respect to thestationary valve-seat 72 which has two inclined surfaces which meet toform a sharp edge and which fit the inclined V-seat H of the valve. Thisseat is formed at the upper end of a sleeve 71?,

which is united to a holder h by its threaded section 77. which screwsinto a threaded section of the holder. This holder therefore supportsthe valve-seat and valve and affords means by which both may bevertically adj usted together in the plug H, the said holderhavingat-hreaded end 72, which extends through a threaded hole W in theplug and has at its upper end a cross-piece it by means of which itisturned. This turning of the holder and stem raises and lowers the holderand raises and lowers the valve and valve-seat and adjusts the relationof the valve or valve-seat to the movement of the outer end of the leverGf. As the valve stem or spindle h simply rests upon the end of thelever G and in view of the provision made for the inlet-ports it is notnecessary to connect or disconnect any parts to adjust the valve orvalve-seat, and these may be left in any position. The spring h,surrounding the sleeve 72 bears against a shoulder or flange h at thelower end of the sleeve or spindle h and holds the end of the spindle orsleeve in contact with the lever G, the spring serving to move the valvetoward its valve-seat and to close it.

The gas enters the valve-case through the inlet h which connects withthe passage 72,

formed by a circumferential groove or recess around the plug H, and thispassage h is connected with the small chamber h above the valve and inthe valve-holder by means ofradial passages h (see Fig. 1) through theplug, connecting the passage 72' with the chamber 71 and by means of theradial passages 71 in the valve-holder 72 which connect the said chamberh with the chamber h The gas is always present in these passages andfree to escape from the chamber 70 past the valve H when the valve islifted from the seat 72/ the chamber h extending downwardly around thehead 72, and the gas then passing through the holes h within thevalveseat and passage h ,.fO1D16d within the sleeve 71' by the spindleh" or valve-stem, to the out- I let k the ga's'thus entering into thelarge chamber h within the valve-casing filling it and the cavity of thetube D, and it leaves said chamber by means of the passage h whichextends to the section f of the gas-supp'ly pipe. There extends from thepassage h directly to the passage of this section 'of the gas-supplypipe a hole 7t ,'(see Fig. 2,) adapted to be entirely closed or partlyclosed by a plug-valve W This passage is small and provides for a verylimited feed of gas to the burner in order that a sufficient quantity ofgas may be continuously supplied it to keep it alight when the mainsupply has been The upper entirely closed by the valve H.

section of the valve-casing has a conical seat H for the plug H, and theplug is held in place by the coupling it. onto the plug and covers theend of the spindle and its turning and indicating end 72,

It will be noticed that all the parts of the valve are attached to theplug H and that by releasing the coupling 72. the plug and valve areremoved together from the valvecasing and all parts of the valve thusrendered accessible.

It will further be seen that the stationary valve-seat 71 has below it acavity 71., and this cavity is adapted to receive and hold any foreignsubstance which may lodge upon either of the valve-seats. The valve isprovided with the inverted-V seat, and the stationary valve-seat isshaped as described and provided with a chamber below its edge in orderthat the action of the valve may not be impeded by any tendency of thevalve to become inoperative because of a clogging due to the presence ofany gas product about the seats, the seats being formed to shed suchproducts, and the receptacle being formed to receive them, but in casethe valveshould become inoperative or lazy in its action because of suchclogging or partial clogging then it may be very easily removed from thevalve-case, cleansed, and returned. Moreover, the valve and valve-seatare easily and immediately removable from the valveholder, which permitsthe plug H to be removed to permit of the removal of the valve and to beimmediately replaced while the valve is being cleansed, its replacementimmediatel y closing the hole, through which gas would otherwise escape.

The upper section of the valve-casing has a flange 71 which bears uponthe flange c of the lower section and is united thereto by the screw 77.

The valve-casing itself is attached to the case A by the neck 0 only,said neck making a screw connection with the threaded hole in the bottomof the chamber h, as above specifled.

It will be seen that the valve may be removed or replaced withoutdisturbing any-of the connections of the valve-casing with thegas-supply pipes. In lieu of the sleeve'h for holding and guiding thevalve-head it.

there may be used a spindle provided with holes or channels in or on itsouter surface and these holes extending from the valve-seat to below thelower edge of the sleeve 71 The horizontal sections of these spindlesare shown in Figs. 5 and 6.

I would not be understood as limiting the invention to its use inconnection with the regulation of gas in a liquid-heater, but may use itfor other purposes to which it may be applicable.

While I prefer the construction of reservoir-shell and valve-casingshown, yet I do not intend to confine the invention to this A cap 77.screws IIO form of construction, as the reservoir may have a continuousor unbroken top and the valve-casing located on it.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States- 1. In a regulating-valve of thecharacter specified, the combination of the valve-case having an inletand an outlet with a plug H having a chamber connected with said inletand outlet and a valve and valve-seat carried by said plug, as and forthe purposes described.

2. In a regulating-valve of the character specified, the combinationofthe valve-casing having inlet and outlet passages, a plug H contained ina conical cavity therein, havinga chamber connected with the inlet andoutlet, a valve-seat carried by said plug and means for varying theposition of said valve and valve-seat lengthwise said plug.

3. The combination in a valve of the character specified of avalve-casing having an inlet and an outlet, a valve-holder bodilyremovable from said casing, and having a chamber connected with theinlet and outlet passages and a valve seat and movable valveholdersupported by said holder and removable therewith and means actuated bychanges in temperature for moving said valve auto matically, as and forthe purposes described.

4. The combination in a valve of the character specified of the movablevalve-head it having theinverted-V-shaped seat H with the stationaryvalve-seat 71 having the inclined sides and a chamber it around andbelow the said stationary valve-seat.

5. The combination of the 'valve-casin g having the inlet h the chamber71 and an outlet therefrom, the conical seat H the conical plug H havinga seat to fit said conical seat H and detachably secured to thevalve-case, a valve adjuster and holder h attached to the said plug andadjustable lengthwise it by means extending through the same, thechamber h therein connected with the inlet h the sleeve h attached tothe holder h having the stationary valve-seat 77/ the valve-head ithaving the valve-seat H, the stem h having comprising the sections a, cunited together,

the said valve-casing being secured to the easing A by the threaded neck0 which screws into the threaded hole a and the liquid-supply pipeconnected with the valve-casing by a pipe extending through the hole aand the gas-feed pipes being connected with the valvecasing, as and forthe purposes set forth.

7. The combination in a liquid-heater of the shell A of theliquid-heater, the valve-casing O united to said shell by the threadedneck 0 entering a threaded hole therein, the liquidsupply pipe Bconnected directly with the valve-casing, the gas-feeding pipes attachedto said casing, devices contained in the valvechamber for multiplyingthe movement of the inextensible rod D, the said inextensible rod andits extensible tube D, the tube being attached to the said neck 0 and aremovable valve-holder H detachably secured to said casing, having achamber connected with the inlet h and the outlet 71 and avertically-adjustable valve attached to said holder to be removabletherewith and to be supported thereby when in operative position, andwith its lower end in operative relation to the said device formultiplying the motion of the said valve D.

8. The combination in a regulating-valve of the character described ofthe removable plug or holder H, the valve-holder h and a sleeve h havinga valve-seat detachable from the said holder and a valve H carried bysaid sleeve 72 its stem h and spring h, the said valve stem and springbeing removable with the said sleeve 72 from the holder.

LEVI LEROY ROWE.

